Hi   !

Would you try this please :

Type in the address bar about:config (press Enter) (promise to be careful, if asked) In the search bar type : browser.link.open And look for the preference : browser.link.open_newwindow and set its value to 1 (one) and : browser.link.open_newwindow.restriction and set its value to 0 (zero)

See for more information :

http://kb.mozillazine.org/Browser.link.open_newwindow.restriction

http://kb.mozillazine.org/Browser.link.open_newwindow

You could also consider this add-on :

https://addons.mozilla.org/en-US/firefox/addon/open-link-in-current/

I just tried your suggestions, however they didn't help. I can still open more than 1 FF instance manually, by pressing the FF icon, and also when I click a link from an external application (like Thunderbird), it gets opened in a new browser window, not a new tab in the already opened FF instance.

See also:

• browser.link.open_newwindow.override.external (default: -1)

The meaning of the value of browser.link.open_newwindow.override.external is the same as of browser.link.open_newwindow

• 1:current tab; 2:new window; 3:new tab;

I tried all of these with no success:

browser.link.open_external (from 1 to 3) browser.link.open_newwindow (from 1 to 3) browser.link.open_newwindow.override.external (from 1 to 3) browser.link.open_newwindow.restriction (0 and 1)

Other ideas?

wysiwygbg said

I just tried your suggestions, however they didn't help. I can still open more than 1 FF instance manually, by pressing the FF icon, and also when I click a link from an external application (like Thunderbird), it gets opened in a new browser window, not a new tab in the already opened FF instance.

How about that add-on I suggested  ?

https://addons.mozilla.org/en-US/firefox/addon/open-link-in-current/

See :

https://www.ghacks.net/2009/07/03/force-firefox-to-open-links-in-same-tab/

wysiwygbg said

I tried all of these with no success: browser.link.open_external (from 1 to 3) browser.link.open_newwindow (from 1 to 3) browser.link.open_newwindow.override.external (from 1 to 3) browser.link.open_newwindow.restriction (0 and 1) Other ideas?

You've got the values wrong : it's from 3 to 1 and from 1 to 0

Happy112 said

You've got the values wrong : it's from 3 to 1 and from 1 to 0

I meant that I've tried every possible combination from 1 to 3 and from 0 to 1. I should've been more clear. None of those settings do anything.

I don't need links to open in the same tab, I want them to open in the same window, but in a new tab, and not in a new browser window.

wysiwygbg said

I don't need links to open in the same tab, I want them to open in the same window, but in a new tab, and not in a new browser window.

You probably will already have checked this setting :

3-bar menu (or 'Tools') => Options => General Under 'Tabs' : Check 'Open new windows in a new tab instead'

Sorry, this does not work also.

What if you click on a link whilst holding the Ctrl Key  ? The link will open in a new tab ....... (At least that's how I alway do it)

Running completely out of ideas, but found this :

https://alternativeto.net/software/tab-utilities/